In the first half of the season, Shin Yamada played eleven matches for Celtic without scoring. In the second half of the season, he was loaned to Preußen Münster, where he scored three goals in ten matches in the 2. Bundesliga. Gyorgy Csepregi, sporting director at OH Leuven, stated that Yamada was previously unattainable, but due to limited playing opportunities at Celtic, there was now a chance to acquire him on loan. Csepregi described Yamada as having good movement, positioning, and scoring ability, and said he is exactly the profile they were seeking.

OH Leuven have signed 26-year-old Japanese striker Shin Yamada from Celtic on a season-long loan deal. The forward, who has been capped once by Japan, joined the Scottish club in July 2025 and made 8 appearances in the Scottish Premiership during the 2025/2026 season without scoring. According to Transfermarkt, his current market value is €800k. He had also been linked with a move to Preußen Münster.